The volcano is thousands of feet below the ocean’s surface, so it poses no danger to people. But under all that water, a ...

California has experienced three earthquakes in the last 24 hours, sparking fears that a major quake could soon strike.

The U.S. is home to some of the world’s most powerful volcanoes, but which states have the most? From Hawaii’s lava flows to ...

At least 50 gray wolves live in California now, a success story for environmentalists and headache for ranchers ...